Dyfyniad APA
McGhee, T. J. (1991). Water supply and sewerage (6th ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
McGhee, Terence J. Water Supply and Sewerage. 6th ed. New York: McGraw-Hill, 1991.
Dyfyniad MLA
McGhee, Terence J. Water Supply and Sewerage. 6th ed. McGraw-Hill, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.